Manufactured by Allen-Bradley, the 140U-D6D3-B20 circuit breaker is a molded case circuit breaker that is classified under the 140U MCB series. The unit features the D frame type, while the rated current is 12 Amps. It comes with a magnetic trip 15 to 20 Amps while the rated breaking capacity is 65 kA, with interrupting rating rated at 65 kA. The Allen-Bradley 140U MCB series circuit breakers feature 2 and 3-pole configurations and they have a rated insulation voltage of 690 Volts IEC. The rated frequency is 50 to 60 Hertz. Allen-Bradley 140U MCB circuit breakers meet the UL 489 standard, showing that they are acceptable for global use. The 140U-D6D3-B20 circuit breaker is rated as a high interrupting rating component with a 100% rating of up to 10 Amps.

The 140U-D6D3-B20 circuit breaker is suitable for backfeeding at 240 Volts and 480Y/277 Volts. It comes with terminal shields with an IP 20 Ingress protection rating. This Allen-Bradley 140U MCB circuit breaker features an end cap kit that provides a 3-phase connection for terminal or bolt-on connections. The unit also comes with metric hardware, and it has a padlock kit. The 140U-D6D3-B20 circuit breaker is designed as a flexible wire module with the contactor separately mounted. The Eco-load feeders mount on a DIN Rail. The Allen-Bradley 140U-D6D3-B20 circuit breaker features electrical and mechanical interconnections with AC coils or DC electronic coils. The circuit breaker features extension shaft support for providing the unit with consistent alignment. The Allen-Bradley 140U-D6D3-B20 circuit breaker features a load terminal cover for ensuring the compliance of the front mount auxiliary contacts when the unit is installed.